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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 14 |
| 4 | 43 |
| 5 | 144 |
| 6 | 523 |
| 7 | 2048 |
| 8 | 8597 |
| 9 | 38486 |
| 10 | 182905 |
| 11 | 919146 |
| 12 | 4866871 |
| 13 | 27068420 |
| 14 | 157693007 |
| 15 | 959873708 |
| 16 | 6091057009 |
| 17 | 40213034874 |
| 18 | 275699950381 |
| 19 | 1959625294310 |
| 20 | 14418124498211 |
| 21 | 109655727901592 |
| 22 | 860946822538675 |
| 23 | 6969830450679864 |
| 24 | 58114638923638573 |
[1,2,5,14,43,144,523,2048,8597,38486,182905, 919146,4866871,27068420,157693007,959873708, 6091057009,40213034874,275699950381,1959625294310, 14418124498211,109655727901592,860946822538675, 6969830450679864,58114638923638573] |